Guys like Floyd just haven't had theirs tested enough to be on a top ten list. Not a knock on him, he's just that good.

McCullough's is just ridiculous, I mean a guy like Bernard no doubt has a great chin but he has a great defense too, he's avoided a lot of punches that a guy like McCullough didn't. Really the same for Toney, even though I do think he's proven to have an all time great chin, he also rolled beautifully with punches.

Its those guys that are average or worse on defense and still can take the punches that amaze me. Marion Wilson must have had a good one, don't know if I've even seen him fight or not though.